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Finding the Fourth Proportional to 66,692.20, 100,005.90 and 37,078.60

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Solution

The fourth proportional to 66,692.20, 100,005.90 and 37,078.60 is: 55,599.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,692.20 : 100,005.90 = 37,078.60 : x
  2. Step 2: Convert to fraction form
    66,692.20/100,005.90 = 37,078.60/x
  3. Step 3: Cross multiply
    66,692.20x = 100,005.90 × 37,078.60
  4. Step 4: Simplify right side
    66,692.20x = 3,708,078,763.74
  5. Step 5: Solve for x
    x = 3,708,078,763.74/66,692.20
  6. Step 6: Final answer
    x = 55,599.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.